Date on Master's Thesis/Doctoral Dissertation
Geography and Geosciences
Geography (Applied), MS
Day, C. Andrew
Committee Co-Chair (if applicable)
sediment yield; RUSLE; vegetation; climate change; soil erosion; soil degradation
Soil erosion is of escalating importance as increasing population and climate change have put increasing pressures on agricultural food production. Vegetation and precipitation are two factors that control the amount of soil erosion extant within a region. Sediment delivery ratios (SDRs) assess the ratio of soil eroded from a watershed system that is permanently removed from the system through stream sediment discharge. Using 1) river discharge and sediment concentration data and 2) the Revised Universal Soil Loss Equation (RUSLE), this thesis analyzes fluctuations in monthly SDRs for an average hydroclimatological crop-harvest season for the Senachwine Creek watershed, IL. Through calculating average gross soil erosion and sediment yield, it is found that significant fluctuations in watershed soil erosion and sediment yield occur in response to changes in precipitation and crop vegetation cover.
Liebman, Jonah, "Analyzing the effects of of seasonal land cover and precipitation on the sediment delivery ratio of an agriculture dominated watershed." (2020). Electronic Theses and Dissertations. Paper 3463.
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